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CAESIUM ( Cs). Discover: Gustow Kirchoff Loction:Germany Year:1860 Atomic number:55 Group:1 Period:6 Atomic weight :132.90 g/mol. I t can be melt 28 °C I t discovered in mineral water.
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Discover: Gustow Kirchoff Loction:Germany Year:1860 Atomic number:55 Group:1 Period:6 Atomic weight:132.90 g/mol
It can be melt 28 °C It discovered in mineral water